US4250434A - Pressure-responsive electric switch - Google Patents

Pressure-responsive electric switch Download PDF

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Publication number
US4250434A
US4250434A US05/904,887 US90488778A US4250434A US 4250434 A US4250434 A US 4250434A US 90488778 A US90488778 A US 90488778A US 4250434 A US4250434 A US 4250434A
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United States
Prior art keywords
tube
membrane
assembly
set forth
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/904,887
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English (en)
Inventor
Jean Valansot
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Individual
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Individual
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/06—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner

Definitions

  • the present invention relates to control members and more particularly to a control member or device which is sensitive to manual pressure and is relatively spread out in space; a few cases of particularly interesting application of the device are given by way of example and concern both the field of furniture and of illumination.
  • a first type of control member formed of a substantially spherical enclosure at times referred to as a "bulb", intended to transmit pneumatically pressure exerted by the hand or foot, for instance which results in a temporary deformation of the enclosure;
  • the bulb is in general located at the end of a small flexible tube which serves simultaneously as attachment for the bulb and conduit for the fluid (air or the like) contained within the bulb; it is convenient to define such a device as being localized in space.
  • control member or device which comprises an enclosure having deformable tubular walls the outside diameter of which is on the order of 1-2 cm and the length of which may be one or more meters; such an enclosure can be deformed temporarily by a force which it transmits to one of its ends where a suitable detector, such as a pressure detector, for instance, can take note of the force as a control signal; it is convenient to define such a device as being spread out in space.
  • a suitable detector such as a pressure detector, for instance
  • Such devices serve, for instance, to detect the passage of a vehicle over a road upon the entrance into a gas station.
  • the fluid contained in the enclosure is generally a liquid and the enclosure itself is relatively elastically resistant, to such an extent that it is frequently impossible to deform it by hand.
  • the object of the present invention is, in general, the new application of an existing product now used in particular for the thermal insulating of tubular conduits; this product is in the form of a tube of cellular elastomeric material having in profile the shape of a relatively thick circular ring; such a tube is impermeable to gases, it is light and although very flexible it maintains a suitable natural shape.
  • a control device comprising an enclosure with deformable tubular bulb, which is extended in space and intended to be deformed temporarily by a force constituting an initial control signal
  • the said tubular wall of the enclosure is formed of a cellular elastomeric material, with the result primarily that the force of deformation can be a relatively small force such as a manual force while permitting the tubular wall to maintain itself in a suitable natural position
  • the cellular elastomer which constitutes the tube may, for instance consist of foam rubber or else of an expanded flexible polyurethane, which is an electrically insulating material which imparts safety to the device.
  • the control device or member of the invention preferably transmits the control to a cybernetic chain by means of a membrane which closes off one of the ends of the said tubular enclosure, said membrane being in mechanical relationship with an electric microcontact of maintained or nonmaintained action contained within the said cybernetic chain; the second end of the tube may be closed either by a transmission membrane such as the one indicated above or by a solid part forming a plug.
  • a transmission membrane such as the one indicated above or by a solid part forming a plug.
  • the invention is applicable to the control of electric lights; it can be applied to any manually initiated forms of control; finally, it will be noted that the field of use of the invention is in particular that in which certain special conditions relating either to the condition of the person who is to initiate the control or the environment of said person would prevent a precise rapid locating of a spatially localized control member.
  • the device described above can be arranged within the reach of the hand of a person who is sleeping, advantageously towards the head of the bed, with which it can be associated in a very esthetically pleasing manner; as a result of this arrangement a person when awaking can, without groping, readily turn on a bed lamp.
  • a second application also relates to the application of the device described above for the control of household lights and resides in the control of a desk lamp, the device of the invention being advantageously arranged below and along the front portion of the top of such desk.
  • a third application resides in a stop control constituting a safety for machine tools.
  • FIG. 1 is a partial longitudinal sectional view of one end of a control device in accordance with the invention
  • FIG. 2 is a front sectional view thereof
  • FIG. 3 is an illustration of an application of the device of the preceding figures for the control of a bed lamp
  • FIG. 4 is a diagrammatic representation of a cybernetic chain which is controlled by the manual control member of the invention, for controlling the turning on of a bed lamp when the alarm of an alarm clock stops.
  • FIG. 5 shows a machine tool equipped with a device in accordance with the invention, which assures safety for the user
  • FIG. 6 is an illustration of the application of the device of FIGS. 1 and 2 for controlling the turning on of a desk lamp.
  • the control device consists primarily of a tubular-wall enclosure 1 formed of a cellular material such as foam rubber or flexible polyurethane foam.
  • This tubular wall is in fact a hollow part in the shape of a circular ring known for purposes of thermal insulation of which the present invention makes a new application.
  • Tests have confirmed the ability of such a cellular material having closed cells to produce a manually deformable enclosure; even a slight manual pressure results in a rather substantial change in the inside volume of the enclosure; of course this change in inside volume of the enclosure results in a change in the relative pressure within the enclosure which is greater the shorter the tube which forms the wall of the enclosure.
  • the fact that the enclosure is made of a cellular material and that it is relatively thick as compared with its diameter seem to be the reasons for this technically important result.
  • a membrane 2 arranged on a membrane-holding sleeve 3 closes off at least one of the ends of the tube 1 while the other end can be closed by a simple plug; a microcontact 4 is advantageously arranged in the membrane-holder sleeve and the sensor 5 of said microcontact can be actuated by the membrane; the mechanical connection between the membrane and the sensor 5 is advantageously produced by means of a push plate 6 which is rigidly attached to the membrane.
  • an orifice such as 7 for placing the inside of the sleeve into communication with the atmosphere.
  • the membrane can suitably consist of a sheet of natural rubber, so-called “blonde rubber", of 0.1 to 0.3 mm; its useful surface, suitable for a tube having approximately an inside diameter of 4 cm and a thickness of 1 cm, will be about 12 cm 2 ; the force exerted by the membrane on the sensor is then greater than 25 g, which in general is sufficient to actuate the microcontact and this force can be developed by a simple manual push on the tube which may have a length of up to 20 meters.
  • blonde rubber 0.1 to 0.3 mm
  • its useful surface suitable for a tube having approximately an inside diameter of 4 cm and a thickness of 1 cm, will be about 12 cm 2 ;
  • the force exerted by the membrane on the sensor is then greater than 25 g, which in general is sufficient to actuate the microcontact and this force can be developed by a simple manual push on the tube which may have a length of up to 20 meters.
  • the membrane be arranged at the end of the tube, but it could just as well be incorporated in a piezo-sensitive capsule which is spaced from the end of the enclosure-forming tube and connected to said end by a connecting tube of much smaller diameter.
  • a control member 31 like the one shown in the preceding figures is arranged longitudinally against the headboard 32 of a bed at a certain distance and certain height above the bedding so that it is out of the way of the head of the sleeping person; a membrane and a microcontact are arranged at the end 33 of said member so as to control the turning on and off of a bed lamp 35.
  • the shape of the control device 31 harmonizes rather well with the lines of a modern bed; it will also be noted that for purposes of appearance the device may be covered with fabric or leather which is identical to or harmonizes, for instance with a bolster of the bed.
  • FIG. 4 diagrammatically shows a cybernetic chain comprising a membrane 41 arranged at the end of a device 42 similar to that shown in the preceding figures, a microcontact 43 mechanically connected with the membrane 41, a remote switch 44 with two outlets 441 and 442, controlled by the microcontact; the outlet 441 constitutes a feed terminal of a bed lamp 45 while the outlet 442 constitutes a switch mounted on the electric alarm circuit of an alarm clock 46; from the wiring diagram of the remote switch it will be noted that when the bed lamp 45 is turned off, the alarm can be actuated by closure of the circuit by the alarm control member 461 (as in the case of the figure) and that the lighting of the lamp results in the stopping of the alarm.
  • a machine tool a so-called calender
  • FIG. 6 which illustrates another application of the spatially extended control member of the invention
  • a desk lamp 71 is arranged on a desk 72 and a device 74 in accordance with the invention, such as the deformable enclosure of FIGS. 1 and 2, is arranged below and along the front portion 73 of the desk top; a membrane, a micro-switch and a remote switch form a cybernetic chain for the control of the turning on and off of the lamp 71 and are contained, for instance, in the end 75 of the member 74.
  • This application of the device in accordance with the invention makes it possible to turn the lamp on or off without having to stretch one's arm over the desk as is customarily the case.
  • the invention can furthermore be used for controlling the opening of a bank door from any point of the tellers' windows.

Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Push-Button Switches (AREA)
US05/904,887 1977-05-17 1978-05-11 Pressure-responsive electric switch Expired - Lifetime US4250434A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7715822 1977-05-17
FR7715822A FR2391507A1 (fr) 1977-05-17 1977-05-17 Dispositif de commande manuelle a extension spatiale et applications

Publications (1)

Publication Number Publication Date
US4250434A true US4250434A (en) 1981-02-10

Family

ID=9191205

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/904,887 Expired - Lifetime US4250434A (en) 1977-05-17 1978-05-11 Pressure-responsive electric switch

Country Status (3)

Country Link
US (1) US4250434A (de)
CH (1) CH623944A5 (de)
FR (1) FR2391507A1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716413A (en) * 1986-02-05 1987-12-29 Ernest Haile Drunk driver detection system
US5096329A (en) * 1990-12-10 1992-03-17 Ernest Haile Drunk driver detection system
US5400012A (en) * 1993-04-12 1995-03-21 Lifetek, Inc. Breathing monitor
US5431437A (en) * 1992-04-08 1995-07-11 Davidson Textron Inc. Horn actuator for a steering wheel with an air bag unit
WO1996018176A1 (en) * 1994-12-07 1996-06-13 Lifetek, Inc. Breathing monitor
US5780940A (en) * 1996-09-12 1998-07-14 Air Check Corp. Hot wire safety switch
US6046417A (en) * 1999-01-08 2000-04-04 M.P. Menze Research & Development, Inc. Membrane supported and actuated switching mechanism
US20030217602A1 (en) * 2002-04-24 2003-11-27 B. Braun Melsungen Ag Pressure sensor
US20080169956A1 (en) * 2004-10-05 2008-07-17 Shinya Matsuyama Operating Device
US20080246592A1 (en) * 2007-04-03 2008-10-09 Adam Waalkes System and method for managing customer queuing
US7821415B1 (en) * 2008-04-04 2010-10-26 Kimberlin Denver K Pneumatically operated patient bed monitor
US20120256746A1 (en) * 2011-04-06 2012-10-11 Dunson Dan L Tamper-Proof Alarm Component and Methods of Making and Using the Same
US20130175930A1 (en) * 2012-01-06 2013-07-11 Cristina Cawman Illuminated Pet Bed Device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783325A (en) * 1955-01-17 1957-02-26 John A Luckey Extended length hydraulic switch
US2795668A (en) * 1955-03-03 1957-06-11 Paul Asmussen Actuating means for electric light bulbs
US3260812A (en) * 1964-01-31 1966-07-12 Miller Bros Pneumatic safety edge for power operated doors
US3781843A (en) * 1971-04-15 1973-12-25 Sanders Associates Inc Bed guard system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561668A (en) * 1946-12-28 1951-07-24 Wm O Ballard Control device for dental engines and the like
US3303303A (en) * 1964-10-02 1967-02-07 Miller Bros Pneumatic safety edge for power operated door
FR1552120A (de) * 1967-11-17 1969-01-03
US3900710A (en) * 1973-10-01 1975-08-19 John Potter Squeezably actuated general purpose electric switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783325A (en) * 1955-01-17 1957-02-26 John A Luckey Extended length hydraulic switch
US2795668A (en) * 1955-03-03 1957-06-11 Paul Asmussen Actuating means for electric light bulbs
US3260812A (en) * 1964-01-31 1966-07-12 Miller Bros Pneumatic safety edge for power operated doors
US3781843A (en) * 1971-04-15 1973-12-25 Sanders Associates Inc Bed guard system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4716413A (en) * 1986-02-05 1987-12-29 Ernest Haile Drunk driver detection system
US5096329A (en) * 1990-12-10 1992-03-17 Ernest Haile Drunk driver detection system
US5431437A (en) * 1992-04-08 1995-07-11 Davidson Textron Inc. Horn actuator for a steering wheel with an air bag unit
US5400012A (en) * 1993-04-12 1995-03-21 Lifetek, Inc. Breathing monitor
US5864291A (en) * 1993-04-12 1999-01-26 Lifetek, Inc. Breathing monitor with isolating coupler
WO1996018176A1 (en) * 1994-12-07 1996-06-13 Lifetek, Inc. Breathing monitor
US5780940A (en) * 1996-09-12 1998-07-14 Air Check Corp. Hot wire safety switch
US6046417A (en) * 1999-01-08 2000-04-04 M.P. Menze Research & Development, Inc. Membrane supported and actuated switching mechanism
US20030217602A1 (en) * 2002-04-24 2003-11-27 B. Braun Melsungen Ag Pressure sensor
US6889556B2 (en) * 2002-04-24 2005-05-10 B. Braun Melsungen Ag Pressure sensor
US20080169956A1 (en) * 2004-10-05 2008-07-17 Shinya Matsuyama Operating Device
US20080246592A1 (en) * 2007-04-03 2008-10-09 Adam Waalkes System and method for managing customer queuing
US7821415B1 (en) * 2008-04-04 2010-10-26 Kimberlin Denver K Pneumatically operated patient bed monitor
US20120256746A1 (en) * 2011-04-06 2012-10-11 Dunson Dan L Tamper-Proof Alarm Component and Methods of Making and Using the Same
US8816852B2 (en) * 2011-04-06 2014-08-26 Dan L. Dunson Tamper-proof alarm component and methods of making and using the same
US20130175930A1 (en) * 2012-01-06 2013-07-11 Cristina Cawman Illuminated Pet Bed Device

Also Published As

Publication number Publication date
FR2391507B1 (de) 1982-12-10
FR2391507A1 (fr) 1978-12-15
CH623944A5 (de) 1981-06-30

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